An alleged white supremacist from Manassas, Va., who has expressed hatred and support for violence toward a number of political figures was arrested today accused of illegally obtaining a fully automatic AK-47.

Neil H. MacBride, U.S. Attorney for the Eastern District of Virginia, and James W. McJunkin, Assistant Director in Charge of the FBI’s Washington Field Office, made the announcement.

Douglas Howard Story, 48, was charged with making a firearm in violation of the National Firearms Act, which carries a maximum penalty of 10 years in prison.

According to court records, Story came to the attention of law enforcement through a confidential source who saw information Story had posted on an Aryan Nation website indicating that Story was preparing to buy an AK-47 and have it modified to become fully automatic. Story allegedly stated that he is planning on ambushing and murdering any law enforcement officer that stops him on the street if and when martial law is enacted in the United States. In addition, Story has allegedly made numerous statements on various white supremacy online forums, using the screen name “Confederate Brother,” where he continually rants about his hatred of minorities, including his desire that President Obama and Attorney General Holder be removed from office “with a 30.06.”

Court records allege that story provided a semi-automatic AK-47, along with $120, to undercover law enforcement with the intent that it be modified to become fully automatic. He was arrested this afternoon by members of FBI Washington Field Office’s Joint Terrorism Task Force after allegedly receiving the modified weapon from an undercover agent.

The investigation was conducted by the FBI’s Washington Field Office, with assistance from the U.S. Secret Service. Assistant United States Attorney Ronald L. Walutes Jr.is prosecuting the case on behalf of the United States.

Criminal complaints are only charges and not evidence of guilt. A defendant is presumed to be innocent until and unless proven guilty.